mrblack | 46fdad450a9e8552e956850fed6b788b82a8f97a43543e0e6d079f44b2570d27

Analysis

max time kernel
149s
max time network
147s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240729-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240729-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
29-07-2024 04:06

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General

Target

37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
Size

1.2MB
MD5

37aeb312f99bda9d77797c65efa8235d
SHA1

ae68f9f5de15748ca8946215b67e4d83dbbd7f1a
SHA256

46fdad450a9e8552e956850fed6b788b82a8f97a43543e0e6d079f44b2570d27
SHA512

9f8a1dd5fae8cd17624ef55afd1c5dad6f2c906c98f68aab78c50c024af967bfa9673e798b56bfd825fcbbaf6576d7d65c4f53e91c078a010b1d5b42b4f3e9dc
SSDEEP

24576:e845rGHu6gVJKG75oFpA0VWIX4O2y1q2rJp0:745vRVJKGtSA0VWIotu9p0

Score

10^/10

mrblack antivm botnet persistence trojan

Malware Config

Signatures

MrBlack Trojan
IoT botnet which infects routers to be used for DDoS attacks.
trojan botnet mrblack

MrBlack trojan 1 IoCs

resource	yara_rule
behavioral1/files/fstream-4.dat	family_mrblack

Executes dropped EXE 2 IoCs

ioc	pid	Process
/usr/bin/bsd-port/getty	1532	getty
/usr/bin/.sshd	1556	.sshd

Modifies init.d 1 TTPs 2 IoCs

Adds/modifies system service, likely for persistence.

persistence

Boot or Logon Autostart Execution

T1547

description	ioc	Process
File opened for modification	/etc/init.d/DbSecuritySpt	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/etc/init.d/selinux	getty

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/route	getty

Write file to user bin folder 1 TTPs 10 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/usr/bin/bsd-port/udevd.lock	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/usr/bin/bsd-port/getty	cp
File opened for modification	/usr/bin/.sshd	cp
File opened for modification	/usr/bin/dpkgd/lsof	cp
File opened for modification	/usr/bin/bsd-port/getty.lock	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/usr/bin/dpkgd/ps	cp
File opened for modification	/usr/bin/dpkgd/ss	cp
File opened for modification	/usr/bin/lsof	cp
File opened for modification	/usr/bin/bsd-port/conf.n	getty
File opened for modification	/usr/bin/bsd-port/getty.lock	getty

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/bin/ps	cp
File opened for modification	/bin/ss	cp

Checks CPU configuration 1 TTPs 2 IoCs

Checks CPU information which indicate if the system is a virtual machine.

antivm

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
File opened for reading	/proc/cpuinfo	getty
File opened for reading	/proc/cpuinfo	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118

Reads system network configuration 1 TTPs 4 IoCs

Uses contents of /proc filesystem to enumerate network settings.

System Network Configuration Discovery

T1016

description	ioc	Process
File opened for reading	/proc/net/dev	getty
File opened for reading	/proc/net/dev	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for reading	/proc/net/route	getty
File opened for reading	/proc/net/arp	getty

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/stat	getty
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/meminfo	getty
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/cmdline	insmod
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/stat	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	cp
File opened for reading	/proc/filesystems	mkdir

Writes file to tmp directory 7 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/notify.file	.sshd
File opened for modification	/tmp/gates.lod	.sshd
File opened for modification	/tmp/moni.lod	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/tmp/bill.lock	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/tmp/gates.lod	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/tmp/notify.file	37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
File opened for modification	/tmp/moni.lod	.sshd

/tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
/tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118
1⤵
- Modifies init.d
- Write file to user bin folder
- Checks CPU configuration
- Reads system network configuration
- Reads runtime system information
- Writes file to tmp directory
PID:1502
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"
  2⤵
  PID:1514
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt
    3⤵
    PID:1515
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"
  2⤵
  PID:1516
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt
    3⤵
    PID:1517
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"
  2⤵
  PID:1518
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt
    3⤵
    PID:1519
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"
  2⤵
  PID:1520
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt
    3⤵
    PID:1521
- /bin/sh
  sh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"
  2⤵
  PID:1522
- - /bin/ln
    ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt
    3⤵
    PID:1523
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1524
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1525
- /bin/sh
  sh -c "mkdir -p /usr/bin/bsd-port"
  2⤵
  PID:1526
- - /bin/mkdir
    mkdir -p /usr/bin/bsd-port
    3⤵
    - Reads runtime system information
    PID:1527
- /bin/sh
  sh -c "cp -f /tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118 /usr/bin/bsd-port/getty"
  2⤵
  PID:1528
- - /bin/cp
    cp -f /tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118 /usr/bin/bsd-port/getty
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1529
- /bin/sh
  sh -c /usr/bin/bsd-port/getty
  2⤵
  PID:1531
- - /usr/bin/bsd-port/getty
    /usr/bin/bsd-port/getty
    3⤵
    - Executes dropped EXE
    - Modifies init.d
    - Reads system routing table
    - Write file to user bin folder
    - Checks CPU configuration
    - Reads system network configuration
    - Reads runtime system information
    PID:1532
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"
      4⤵
      PID:1540
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux
        5⤵
        
        PID:1541
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"
      4⤵
      PID:1542
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux
        5⤵
        
        PID:1543
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"
      4⤵
      PID:1544
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux
        5⤵
        
        PID:1545
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"
      4⤵
      PID:1546
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux
        5⤵
        
        PID:1547
  - - /bin/sh
      sh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"
      4⤵
      PID:1548
    - - /bin/ln
        
        ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux
        5⤵
        
        PID:1549
  - - /bin/sh
      sh -c "mkdir -p /usr/bin/dpkgd"
      4⤵
      PID:1550
    - - /bin/mkdir
        
        mkdir -p /usr/bin/dpkgd
        5⤵
        Reads runtime system information
        
        PID:1551
  - - /bin/sh
      sh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"
      4⤵
      PID:1552
    - - /bin/cp
        
        cp -f /bin/ps /usr/bin/dpkgd/ps
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1553
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1557
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1558
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1559
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1560
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"
      4⤵
      PID:1561
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ps
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1562
  - - /bin/sh
      sh -c "chmod 0755 /bin/ps"
      4⤵
      PID:1563
    - - /bin/chmod
        
        chmod 0755 /bin/ps
        5⤵
        
        PID:1564
  - - /bin/sh
      sh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"
      4⤵
      PID:1565
    - - /bin/cp
        
        cp -f /bin/ss /usr/bin/dpkgd/ss
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1566
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1567
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1568
  - - /bin/sh
      sh -c "mkdir -p /bin"
      4⤵
      PID:1569
    - - /bin/mkdir
        
        mkdir -p /bin
        5⤵
        Reads runtime system information
        
        PID:1570
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"
      4⤵
      PID:1571
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /bin/ss
        5⤵
        Writes file to system bin folder
        Reads runtime system information
        
        PID:1572
  - - /bin/sh
      sh -c "chmod 0755 /bin/ss"
      4⤵
      PID:1573
    - - /bin/chmod
        
        chmod 0755 /bin/ss
        5⤵
        
        PID:1574
  - - /bin/sh
      sh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"
      4⤵
      PID:1575
    - - /bin/cp
        
        cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1576
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1577
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1578
  - - /bin/sh
      sh -c "mkdir -p /usr/bin"
      4⤵
      PID:1579
    - - /bin/mkdir
        
        mkdir -p /usr/bin
        5⤵
        Reads runtime system information
        
        PID:1580
  - - /bin/sh
      sh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"
      4⤵
      PID:1581
    - - /bin/cp
        
        cp -f /usr/bin/bsd-port/getty /usr/bin/lsof
        5⤵
        Write file to user bin folder
        Reads runtime system information
        
        PID:1582
  - - /bin/sh
      sh -c "chmod 0755 /usr/bin/lsof"
      4⤵
      PID:1583
    - - /bin/chmod
        
        chmod 0755 /usr/bin/lsof
        5⤵
        
        PID:1584
  - - /bin/sh
      sh -c "insmod /usr/bin/bsd-port/xpacket.ko"
      4⤵
      PID:1587
    - - /sbin/insmod
        
        insmod /usr/bin/bsd-port/xpacket.ko
        5⤵
        Reads runtime system information
        
        PID:1588
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1534
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1535
- /bin/sh
  sh -c "mkdir -p /usr/bin"
  2⤵
  PID:1536
- - /bin/mkdir
    mkdir -p /usr/bin
    3⤵
    - Reads runtime system information
    PID:1537
- /bin/sh
  sh -c "cp -f /tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118 /usr/bin/.sshd"
  2⤵
  PID:1538
- - /bin/cp
    cp -f /tmp/37aeb312f99bda9d77797c65efa8235d_JaffaCakes118 /usr/bin/.sshd
    3⤵
    - Write file to user bin folder
    - Reads runtime system information
    PID:1539
- /bin/sh
  sh -c /usr/bin/.sshd
  2⤵
  PID:1555
- - /usr/bin/.sshd
    /usr/bin/.sshd
    3⤵
    - Executes dropped EXE
    - Writes file to tmp directory
    PID:1556
- /bin/sh
  sh -c "insmod /tmp/xpacket.ko"
  2⤵
  PID:1593
- - /sbin/insmod
    insmod /tmp/xpacket.ko
    3⤵
    - Reads runtime system information
    PID:1594

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Hijack Execution Flow

T1574

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Hijack Execution Flow

T1574

Defense Evasion

Hijack Execution Flow

T1574

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

System Network Configuration Discovery

T1016

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/etc/init.d/DbSecuritySpt

Filesize
64B

MD5
89486e8edb5c65010744c163c59087ed

SHA1
72f9ec4b99af9daef62eb666a5d5d7501d758115

SHA256
237227c17a45bb1020af91bb519e200cdee6b11b3c17e10c9a0d4f9f69f4b62d

SHA512
f8bfca836bf346f05d826066b40a8fe6c090047899145d2243bb106ec48f640f2362ccbc13fed39b79dc6405279888c60bfd54fcba5627b4fcab110359484cdc

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/etc/init.d/selinux

Filesize
36B

MD5
993cc15058142d96c3daf7852c3d5ee8

SHA1
0950b8b391b04dd3895ea33cd3141543ebd2525d

SHA256
8171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208

SHA512
0c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928

Download Submit
/tmp/gates.lod

Filesize
4B

MD5
0c8ce55163055c4da50a81e0a273468c

SHA1
e6cfa8e4a054b888d7a80898d1a7092aa631a302

SHA256
a3513549948fbfecfa1ff0300bf3339f9b1ebff77c9fc831b3c83236a4814d61

SHA512
2c1c4bd60f09a5a69d930f009f426e99067ef3a638165c87fb439d0aed5949e5a002a12c5ff6df12e57e832be884424a39cfafc370796f500507948c662444ec

Download Submit
/tmp/moni.lod

Filesize
4B

MD5
228499b55310264a8ea0e27b6e7c6ab6

SHA1
178116e63a31913ab6da9ab6d92cb510dea7964c

SHA256
9c8dd327d0f259b6facd68100f664c432101f783d31ac9b78b6e9eaf9fa786b8

SHA512
2efeadcee6aa3eb7e370b8e05d12c7269d92180eda2f8665b8663888ed85a4caecf6ed31e5a070de68f43a76b7a24f4cb0b2e6f3f9c017df05f77e6a6bd93c0f

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/tmp/notify.file

Filesize
51B

MD5
902f97c76bb2825ac0c6dc858504d2db

SHA1
d43cdeaf0518d57e12726d8e23194ad23fbbfc85

SHA256
1c1708586c719a5de429b7e4b657b8744c4a77c71c601fda5061e10b801ac92c

SHA512
ae88fd2fca39cfaf2c1f72266629b2146cab7634a637a61d4a324b28250dccb345fa8d041b7b1f8be788ebe2a881d2892b20692ca8057af911dbdc414e8da6de

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/usr/bin/bsd-port/conf.n

Filesize
73B

MD5
78168440b805769d7d124c062b5bfff2

SHA1
ffae1df802a6a842279db677db255552818e7ac6

SHA256
7a2447a4be0a193adba5c2e4f0a1f90fa6338d86de3dbfc12fc76064b8d4b677

SHA512
55d4c3c71c194f9746bc7ff0aa1f5cda46bc98d09847e45009b1bd4544fe36026f0267e304910f78a77294c256c9a7aa870adc69d084b8a949bb6b547c9799dd

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/usr/bin/bsd-port/getty

Filesize
1.2MB

MD5
37aeb312f99bda9d77797c65efa8235d

SHA1
ae68f9f5de15748ca8946215b67e4d83dbbd7f1a

SHA256
46fdad450a9e8552e956850fed6b788b82a8f97a43543e0e6d079f44b2570d27

SHA512
9f8a1dd5fae8cd17624ef55afd1c5dad6f2c906c98f68aab78c50c024af967bfa9673e798b56bfd825fcbbaf6576d7d65c4f53e91c078a010b1d5b42b4f3e9dc

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/usr/bin/dpkgd/lsof

Filesize
159KB

MD5
e093dc78225e2a0a25e3b137c1c1e442

SHA1
c29497cfaae729eb576875e4fdfa400640ab16be

SHA256
1190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e

SHA512
fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0

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/usr/bin/dpkgd/ps

Filesize
130KB

MD5
558edc26f8a38fa9788220b9af8a73e7

SHA1
3024d44e580e9c67f32f6c585d50e2a6cc9a7cac

SHA256
b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5

SHA512
edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f

Download Submit
/usr/bin/dpkgd/ss

Filesize
136KB

MD5
1dc929b5f2cd12fe6a2fe71140d2a9e3

SHA1
f9995a92bb201b1b7738a39a38570ef0c40b52d2

SHA256
418aae1da62554afe9f260866267af328fd761b3fd6f90f0ea53d543e2fefc38

SHA512
fbed011c595084548db440dfbe485b7d27032a44a6ae9e141fe43f31c8c524ff9347135ab035deb441fca99e5a3794f7bb9194f148aa2f60f1547a7c67d47373

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads